He suggests using the TTL to Coax circuit, modified to use only C1, R1 and R2. With alterations to their values of:
C1 = 0.1 -> 0.01uF
R1 = The resistors can be something close to the suggested values.

"The basic idea is that C1 couples the output and makes the output look like AC, and the resistors form a voltage divider to make the output voltage lower."

So from page 33 of the pdf, I should connect pin 7 to the coax shielding and pin 1 to C1 of the cap and resistor circuit?